vtdavid said:Soapstone is radiant heat and steel/cast are convection heaters.
Either type of stove can be either radiant or convective. Radiant is the direct heat given off of the stove, convective heat is heat given from heated air circulation, such as occurs with fan and or heat shields. IE, a soapstone stove can be a convection heater if it has a fan attached. A steel stove with no shields or blower is a radiant heater.
That said, my Jotul F600 (with blower which allows me radiant or convective heat ;-) ) easily does 10 hour overnights with 200-300 degree ending temps. On several occasions I have gone 12-14 hrs and still have coals and 200 temps. Seems like the cast iron will hold that 200 for quite a while. Being kind of a homebody, 14 hrs is as long as I have left it unattended so far in the several months I have owned it, but I expect it will go a couple of more hours. For the daytime crank it up to 500 and pump the heat burns, times run in the 4-6 hr range to keep it burning above 300 with fan blowing WFO.